For half a century, the accepted research on happiness has shown our lives on a U-shaped curve, punctuated by a low point that we have come to know as the 'mid-life crisis'.
Contrary to previous cross-sectional studies of life-span happiness, this new longitudinal data suggests happiness does not stall in midlife, but instead is part of an upward trajectory beginning in our teens and early twenties.
This study is far more reliable than the research that came before it, researchers said.
The team followed two cohorts - one of Canadian high school seniors from ages 18-43 and the other a group of university seniors from ages 23-37.
Both showed happiness increased into the 30s, with a slight downturn by age 43 in the high school sample.
After accounting for variations in participants' lives, such as changes in marital status and employment, both samples still demonstrated a general rise in happiness after high school and university.


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